Jacquard mechanism

ABSTRACT

A jacquard mechanism of otherwise conventional design, with a vertically reciprocating mounting board and a plurality of vertically extending hooks has the guide plate for the like plurality of harness cords fixedly connected to the mounting board. The harness cords connect respective hooks to operating pins carried by a bar.

Field of Search ..l39/59, 63, 64, 85, 86

I I United States Patent 1 [111 3,724,512 Kohl [451 Apr. 3, 1973 [76]Inventor: Karl Kohl, Chlorodontstrasse l0, FOREIGN P NTS OR APPLICATIONSObertshaPSen Offer" 208,222 3/1909 Germany "139/85 baCh/Mam, Germany1,209,589 10/1970 Great Britain... .....139/86 Mar. 3 Netherlands [21]Appl. No.: 231,570 Primary Examiner-Henry S. Jaudon Attorney-Kurt KelmanForeign Application Pl'iOl'Ity Data Mar. 4, Germany A jacquard mechanismof otherwise onventional design, with a vertically reciprocatingmounting board [52] U.S. Cl ..l39/85 and a plurality of verticallyextending hooks has the [51] Int. Cl. ..D03d 3/42 gui e pla e for thelike plurality of harness cords ii [58] edly connected to the mountingboard. The harness cords connect respective hooks to operating pinscarried by a bar.

3 Claims, 1 Drawing Figure JACQUARD MECHANISM The present inventionrelates to jacquard mechanism with a vertically reciprocating mountingboard, a plurality of vertically extending hooks extending upwardly fromthe board and having ends adjacent thereto, a like plurality of harnesscords attached to the respective ends of the hooks and guided throughcorresponding holes in the board, a guide plate for the harness cords,and a bar carrying a like plurality of operating pins, each of theharness cords being attached to a respective one of the pins and theguide plate directing the respective cords to the pins associatedtherewith.

A conventional jacquard mechanism of the type which this invention isdesigned to improve is described and illustrated, for instance, inKettenwirkmaschine (warp knitting machine) by E. Michael,Konradinverlag, Germany, Second Edition, 1952, pages 118-121. in suchmechanism, the vertical hooks are usually lifted off the cooperatingrails by a vertically reciprocating mounting board, the vertical hookshaving spring-like bent ends adjacent the mounting board and adapted torest in corresponding holes in the board-The resiliently tensionedharness cords are directly or indirectly attached to the ends of thehooks and are guided through the holes in the board. The mounting boardis reciprocated by the machine drive. The harness cords are guidedthrough the. guide holes in aguide plate and are deflected towards theoperating pins carried by a bar.

In this known mechanism, the harness cords are worn out rapidly'as theypass through the respective guide holes, causing operating difficultiesand frequent reassembly of the mechanism.

It is the primary object of the present invention to overcome thesedisadvantages by fixedly connecting the guide plate and the mountingboard for common reciprocation.

Where a cord guide rail is interposed between the guide plate and thebar for deflecting the-harness cords, additional friction is produced,which is reduced or eliminated according to a preferredembodiment ofthis invention by making the distance between the guide holes in theguide rail less than the distance between the operating pins.

It is also advantageous to avoid relative motion between the guide railand the harness cords by fixedly connecting the guide rail with theguide plate.

The single FIGURE of the accompanying drawing illustrates, in a verticalsection, a specific embodiment of the jacquard mechanism of theinvention, only the essential parts of the otherwise conventionalmechanism being shown.

The needles 3 extend transversely of the vertical hooks 4 of thejacquard mechanism and control movement of the hooks 4, the needlesbeing controlled by an endless chain of suitably punched cards in a wellknown manner not shown herein. Each vertical hook 4 has an upper end 2normally held by associated rail 1 and a lower spring-like bent end 5resting on holes in mounting board 7. The mounting board is verticallyreciprocated in the direction of double-headed arrow 6, by the maindrive of the machine. Connecting wire 8 is hooked at 9 to the harnesscord 10 and to the bent end 5 of the vertical hook 4, the other end ofthe cord being attached to operating pin 11.

Vertically spaced from and below the mounting board is guide plate 12whose guide holes 13 guide the cords. The guide plate is fixedlyconnected to the mounting board to form a unitary reciprocatingassembly. In the illustrated embodiment, the connection is provided bybolts 14. In this manner, all relative motion between the guide plate,i.e., its guide holes, and the harness cords is avoided.

A cord guide rail 15 is interposed between the guide plate 12 and thebar 19 in which the operating pins 11 are resiliently mounted forvertical reciprocation. The distance 17 between the guide holes 16 inguide rail 15 is less than the distance 18 between the operating pins.This reduces the deflecting angle of the cords from the guide holes 13in guide plate 12, thus reducing the friction between the cords 10 andthe guide holes 16.

It is preferred to connect the guide rail fixedly to the guide plate,such connection being provided by bolts similar to those shown at 14, ifdesired. In this manner, there will be no relative motion at all betweenthe guide rail and the cords.

I claim:

1. A jacquard mechanism comprising 1 a vertically reciprocating mountingboard,

2. a plurality of vertically extending hooks extending upwardly from theboard and having ends adjacent thereto,

3. a like plurality of harness cords attached to the respective ends ofthe hooks and guided through corresponding holes in the board,

. a guide plate for the harness cords fixedly connected to the mountingboard and vertically spaced from and below the board, and

5. a bar carrying a like plurality of operating pins,

each of the harness cords being attached to a respective one of the pinsand the guide plate directing the respective cords to the pinsassociated therewith.

2. The jacquard mechanism of claim 1, further comprising a cord guiderail interposed between the guide plate for the harness cords and thebar carrying the operating pins, the guide rail having a like pluralityof guide holes for respective ones of the cords, and the distancebetween the guide holes being less than the distance between the pins.

3. The jacquard mechanism of claim 1, further comprising a cord guiderail interposed between the guide plate for the harness cords and thebar carrying the operating pins, the guide rail having a like pluralityof guide holes for respective ones of the cords and the guide rail beingfixedly connected to the guide plate.

ll l i l

1. A jacquard mechanism comprising
 1. a vertically reciprocatingmounting board,
 2. a plurality of vertically extending hooks extendingupwardly from the board and having ends adjacent thereto,
 3. a likeplurality of harness cords attached to the respective ends of the hooksand guided through corresponding holes in the board,
 4. a guide platefor the harness cords fixedly connected to the mounting board andvertically spaced from and below the board, and
 5. a bar carrying a likeplurality of operating pins, each of the harness cords being attached toa respective one of the pins and the guide plate directing therespective cords to the pins associated therewith.
 2. a plurality ofvertically extending hooks extending upwardly from the board and havingends adjacent thereto,
 2. The jacquard mechanism of claim 1, furthercomprising a cord guide rail interposed between the guide plate for theharness cords and the bar carrying the operating pins, the guide railhaving a like plurality of guide holes for respective ones of the cords,and the distance between the guide holes being less than the distancebetween the pins.
 3. The jacquard mechanism of claim 1, furthercomprising a cord guide rail interposed between the guide plate for theharness cords and the bar carrying the operating pins, the guide railhaving a like plurality of guide holes for respective ones of the cordsand the guide rail being fixedly connected to the guide plate.
 3. a likeplurality of harness cords attached to the respective ends of the hooksand guided through corresponding holes in the board,
 4. a guide platefor the harness cords fixedly connected to the mounting board andvertically spaced from and below the board, and
 5. a bar carrying a likeplurality of operating pins, each of the harness cords being attached toa respective one of the pins and the guide plate directing therespective cords to the pins associated therewith.